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Low-energy electron...
Low-energy electron diffraction with signal electron carrier-wave wavenumber modulated by signal exchange-correlation interaction
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- Rundgren, John (författare)
- KTH,Kondenserade materiens teori,KTHRoyal Inst Technol, Sweden
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- Sernelius, Bo (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten
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- Moritz, Wolfgang (författare)
- Department of Earth and Environmental Sciences, Ludwig-Maximilians-University, Theresienstrasse 41, 80333 Munich, Germany,Ludwig Maximilians Univ Munchen, Germany
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(creator_code:org_t)
- 2021-10-18
- 2021
- Engelska.
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Ingår i: Journal of Physics Communications. - : IOP Publishing. - 2399-6528. ; 5:10
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Abstract
Ämnesord
Stäng
- Low-energy electron diffraction (LEED) is considered as elastic electron-atom scattering (EEAS) operating in a target crystal waveguide, where a signal electron carrier wave is wavenumber modulated by signal exchange-correlation (XC) interaction. A carrier potential is designed using a KKR (Korringa-Kohn-Rostoker) muffin-tin (MT) model built on overlapping MT spheres that implement atoms with double degree of freedom, radius and potential level. An XC potential is constructed using Sernelius’s many-particle theory on electron self-energy. EEAS phase shifts are derived from Dirac’s differential equations, and four recent LEED investigations are recalculated: Cu(111) + (3 √ 3 × √ 3) R30°-TMB, TMB = 1,3,5-tris(4-mercaptophenyl)-benzene with chemical formula C24H15S3; Ag(111) + (4 × 4)-O; Ag(111) + (7 × √ 3)rect-SO4; and Ru(0001) + ( √ 3 × √ 3)R30°-Cl. Our EEAS phase shifts generate substantially improved reliability factors, and we report the first confirmation of electron self-energy by LEED experiment.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Elastic electron-atom scattering in solids and surface slabs
- Low-energy electron diffraction
- Signal electron exchange-correlation interaction
- Signal electron self-energy in solids
- Surface physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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